| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst for purifying an exhaust gas which shows excellent exhaust gas purification performance even after severe use conditions. <P>SOLUTION: The catalyst for purifying an exhaust gas comprises: a base material; and a catalyst layer formed on the base material and also comprising a catalyst metal and an occlusion material, and in which the standard deviation σ calculated based on the ratio of the area of the occlusion material exposed to the surface of the catalyst layer to the unit area of the surface of the catalyst layer is ≤0.08. <P>COPYRIGHT: (C)2010,JPO&INPIT |
